/*
 * Copyright (c) 2019 The StreamX Project
 *
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *    https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.streamxhub.streamx.spark.core.support.kafka

import org.apache.kafka.clients.producer.KafkaProducer

import java.util.Properties
import scala.collection.mutable

/**
  * a cache for producers
  */
object ProducerCache {

  private val producers = new mutable.HashMap[Properties, Any]()

  def getProducer[K, V](config: Properties): KafkaProducer[K, V] = {
    producers.getOrElse(config, {
      val producer = new KafkaProducer[K, V](config)
      producers(config) = producer
      producer
    }).asInstanceOf[KafkaProducer[K, V]]
  }
}
